Every format in a family archive is quietly running out the clock, just on different schedules. Color prints fade over decades of light exposure. Magnetic tape binders break down and start shedding regardless of how carefully you stored the box. Film reels can develop vinegar syndrome — a self-accelerating chemical breakdown — even in a closet that looks perfectly dry.
Nothing fails dramatically
None of this happens on a dramatic timeline; it happens quietly enough that most people don't notice until a tape won't play back cleanly or a slide has gone magenta. By then you're not preserving the original quality — you're preserving what's left of it.
Rough shelf-life expectations
- Color prints and slides: visible fading within 20–40 years, faster with light and heat exposure.
- Magnetic tape (VHS, Hi8, MiniDV): binder breakdown and shedding commonly begins 15–25 years in.
- Film reels (8mm, Super 8, 16mm): stable for decades if cool and dry, but vulnerable to vinegar syndrome once it starts.
- Optical discs (DVD-R, CD-R): home-burned discs are among the least reliable formats in most archives.
The practical rule
If a format is more than 20 years old and has never been digitized, treat it as running on borrowed time rather than assuming "it's been fine so far." Digitizing is the only step that stops the clock.